Re: [ferret_users] use a finer coastline with go land and go fland

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Both the etopo05 and the Smith and Sandwell topography dataset are available from the PMEL OPeNDAP server. Use them in Ferret with the commands:

    use "http://ferret.pmel.noaa.gov/cgi-bin/nph-dods/data/PMEL/smith_sandwell_topo_v8_2.nc"

Or,

   use "http://ferret.pmel.noaa.gov/cgi-bin/dods/nph-dods/data/PMEL/etopo5.nc"

I was able to double-check the addresses by searching the OPeNDAP list of data under the "OPeNDAP Datasets" link at http://www.opendap.org/data/

To substitute the Smith-Sandwell data set for the ETOPO datasets in fland.jnl, you would need to make your own copy of fland.jnl and edit it. These datasets are too large in general to use for plots the whole globe (the screen or plot image wouldn't have that much resolution anyway), or for large regions, but they're great for seeing the details of small regions.

Ansley

william s. kessler wrote:

The 5-minute etopo dataset is called etopo05 (note the zero).

There is a 2-minute topography dataset from Smith and Sandwell (1994 JGR 99(B11) 21803-21824), which should be available somewhere (for free?). That is as good as exists today, I think.

Billy K

On 20Nov 2006, at 6:56 AM, Timothée Brochier wrote:

Hello ferreters,

The standart go land has a poor resolution at my scale, and the go fland is even worse

I tried go land 5 but it says I don't have etopo5 and didn't manage to install it (I think we have to pay for it?)
BUT I could download a .dat file from the coastal extractor, wich contain the coastline at a very fine resolution.
Is it possible to use the go fland method with that data?

many Thanks,

Timothée
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Ansley Manke, NOAA/PMEL   ansley.b.manke@noaa.gov
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744